An automated lighthouse is found on the northern section of the island.
Around 500 metres north of the island is North West Rock which is home to the fish aggregation site called Fish Soup.
The island is part of the Solitary Islands Marine Park established 2 January 1998 and managed by the NSW Maritime Parks Authority.
Rocks on North Solitary Island consist of mudstone and a light green brittle sillicaceous argillite.
The argillite probably formed from volcanic ash falls.